. >> taylor swift: ♪ i knit sweaters, yo. >> stahl: ...poking fun at her squeaky clean image and turning her uncoolness into cool. >> taylor swift: ♪ you guys bleeped me and i didn't even swear. >> t-pain: ♪ she didn't even swear... >> stahl: taylor swift has won just about every music award there is, including the industry's highest honor, the grammy for album of the year in 2010. but the few setbacks in her meteoric career have come, ironically, on award nights, as when kanye west grabbed the mike from her... and the time she sang a live duet with stevie nicks at the grammys off-key. one nasty review said she had killed her career overnight, and was "too young and dumb to understand the mistake she'd made." >> taylor swift: the things that were said about me by this dude floored me and, like, leveled me. and i... i don't have thick skin. i hate reading criticisms. you never really, like, get past things hurting you. >> stahl: but then, taylor did her thing and turned the wound into a song... ♪ ♪ >> stahl: the hit single "mean." and in the music video, taylor broadened it beyond